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[PATCH] qemu-edid: Restrict input parameter -d to avoid division by zero
From: |
Sebastian Mitterle |
Subject: |
[PATCH] qemu-edid: Restrict input parameter -d to avoid division by zero |
Date: |
Tue, 11 Oct 2022 17:12:16 +0200 |
A zero value for dpi will lead to a division by zero in qemu_edid_dpi_to_mm().
Tested by runnig qemu-edid -dX, X = 0, 100.
Resolves: qemu-project/qemu#1249
Suggested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Sebastian Mitterle <smitterl@redhat.com>
---
qemu-edid.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/qemu-edid.c b/qemu-edid.c
index 20c958d9c7..92e1a660a7 100644
--- a/qemu-edid.c
+++ b/qemu-edid.c
@@ -92,6 +92,10 @@ int main(int argc, char *argv[])
fprintf(stderr, "not a number: %s\n", optarg);
exit(1);
}
+ if (dpi == 0) {
+ fprintf(stderr, "cannot be zero: %s\n", optarg);
+ exit(1);
+ }
break;
case 'v':
info.vendor = optarg;
--
2.37.3
- [PATCH] qemu-edid: Restrict input parameter -d to avoid division by zero,
Sebastian Mitterle <=